package com.sky.controller.user;


import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    private final RedisTemplate redisTemplate;

    public DishController(RedisTemplate redisTemplate) {
        this.redisTemplate = redisTemplate;
    }

    /*
    * 根据菜品分类id查询菜品
    * */
    @GetMapping("/list")
    public Result<List<DishVO>> list(Long categoryId) {
        // 给不同的分类设置一个key
        String key = "dish_cid:" + categoryId;
        // 先查询redis中是否有该分类下的菜品数据
        List<DishVO> list = (List<DishVO>) redisTemplate.opsForValue().get(key);
        // 如果存在则返回redis中的数据
        if (list != null) {
            return Result.success(list);
        }
        // 如果不存在则在数据库中查询，将查询结果插入到redis中
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);//查询起售中的菜品
        // 1.查询菜品
        list = dishService.listWithFlavor(dish);
        // 2.插入到redis中
        redisTemplate.opsForValue().set(key, list);
        return Result.success(list);
    }
}
